Re: BUG #15021: Postgres crashes unexpectedly

On Fri, Jan 19, 2018 at 3:47 PM, PG Bug reporting form
<noreply@postgresql.org> wrote:
> The following bug has been logged on the website:
>
> Bug reference:      15021
> Logged by:          Wallace Baggaley
> Email address:      wally.baggaley@gmail.com
> PostgreSQL version: 9.6.5
> Operating system:   Debian GNU Linux 8 container on CentOS 7.2.1511
> Description:
>
> Postgres crashes unexpectedly and indicates that it received a signal to end
> based on the following logs. But checking user history and journald show
> nothing has terminated the application. Is it possible the log "LOG:
> received smart shutdown request" could be caused by something other than a
> signal. What signals could be associated with this log or is this possibly
> related to a crash?
>
> Thanks!
> Wally
>
>         January 19th 2018, 11:26:14.710 LOG:  autovacuum launcher started
>         January 19th 2018, 11:26:14.706 LOG:  database system is ready to accept
> connections
>         January 19th 2018, 11:26:14.704 LOG:  MultiXact member wraparound
> protections are now enabled
>         January 19th 2018, 11:26:14.690 LOG:  invalid record length at 0/88D9C00:
> wanted 24, got 0
>         January 19th 2018, 11:26:14.690 LOG:  redo is not required
>         January 19th 2018, 11:26:14.689 LOG:  database system was not properly shut
> down; automatic recovery in progress
>         January 19th 2018, 11:26:14.677 LOG:  database system was interrupted; last
> known up at 2018-01-19 19:26:04 UTC
>         January 19th 2018, 11:26:04.710 LOG:  autovacuum launcher started
>         January 19th 2018, 11:26:04.709 LOG:  database system is ready to accept
> connections
>         January 19th 2018, 11:26:04.707 LOG:  MultiXact member wraparound
> protections are now enabled
>         January 19th 2018, 11:26:04.698 LOG:  redo done at 0/88D9B68
>         January 19th 2018, 11:26:04.698 LOG:  last completed transaction was at log
> time 2018-01-19 18:33:58.443636+00
>         January 19th 2018, 11:26:04.698 LOG:  invalid record length at 0/88D9B90:
> wanted 24, got 0
>         January 19th 2018, 11:26:04.694 LOG:  redo starts at 0/88D2B70
>         January 19th 2018, 11:26:04.692 LOG:  database system was not properly shut
> down; automatic recovery in progress
>         January 19th 2018, 11:26:04.678 LOG:  database system was interrupted; last
> known up at 2018-01-19 16:41:01 UTC
>         January 19th 2018, 10:34:07.436 DETAIL:  Key ("code")=(ABC123) already
> exists.
>         January 19th 2018, 10:34:07.436 STATEMENT:  insert into "TableName"
> ("code","subcode")  values ($1,$2)
>         January 19th 2018, 10:34:07.436 ERROR:  duplicate key value violates unique
> constraint "INDEX_NAME"
>         January 19th 2018, 10:34:03.807 STATEMENT:  insert into "TableName"
> ("code","subcode")  values ($1,$2)
>         January 19th 2018, 10:34:03.806 DETAIL:  Key ("code")=(ABC123) already
> exists.
>         January 19th 2018, 10:34:03.806 ERROR:  duplicate key value violates unique
> constraint "INDEX_NAME"
>         January 19th 2018, 10:33:58.533 LOG:  autovacuum launcher shutting down
>         January 19th 2018, 10:33:58.526 LOG:  received smart shutdown request
>         January 19th 2018, 10:33:58.452 DETAIL:  Key ("code")=(ABC123) already
> exists.
>         January 19th 2018, 10:33:58.452 STATEMENT:  insert into "TableName"
> ("code","subcode")  values ($1,$2)
>         January 19th 2018, 10:33:58.451 ERROR:  duplicate key value violates unique
> constraint "INDEX_NAME"

These log messages appear not to be in order; is this how the were in the file?

merlin